Home / 57,205.93-78,856.69-40,162.36

Finding the Fourth Proportional to 57,205.93, 78,856.69 and 40,162.36

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Solution

The fourth proportional to 57,205.93, 78,856.69 and 40,162.36 is: 55,362.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,205.93 : 78,856.69 = 40,162.36 : x
  2. Step 2: Convert to fraction form
    57,205.93/78,856.69 = 40,162.36/x
  3. Step 3: Cross multiply
    57,205.93x = 78,856.69 × 40,162.36
  4. Step 4: Simplify right side
    57,205.93x = 3,167,070,772.19
  5. Step 5: Solve for x
    x = 3,167,070,772.19/57,205.93
  6. Step 6: Final answer
    x = 55,362.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.